MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixA0:19:B2:70:00:00 /28
Vendor address6F.,No.866,Zhongzheng Rd.,Zhonghe Dist., New Taipei City Taiwan TW 23586
Country🇹🇼 Taiwan
RegisteredMar 11, 2018
Block rangeA0:19:B2:70:00:00– A0:19:B2:7F:FF:FF
Address capacity1,048,576
AdministrationUniversally administered: its prefix comes from a block registered through the IEEE Registration Authority
TransmissionUnicast: addressed to a single device
SourceIEEE Registration Authority
Address capacity is the size of this registered block, not a count of devices actually manufactured or online. Registration identifies the organization holding the block, not a specific device model or unit.
Curious how a prefix like this turns into a full address? See how MAC addresses are structured →
Example addresses in this block
Where this block sits
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A0:19:B2:60:00:00 /28
GfG mbH
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A0:19:B2:80:00:00 /28
MIS Industrie Systeme GmbH & Co. KG
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
ARIMA Communications Corp. holds 5 registered blocks in the IEEE registry, ranking #551 of 33,427 organizations by block count.
Other blocks registered to ARIMA Communications Corp.